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06-09-2018, 03:37 AM | #1 |
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Tyre Stem Valve
Gents,
Recently, the low air pressure icon appeared on my dash indicating that there was an issue with my front left tyre. Drove to a nearby shop to have it checked. Issue was with the degraded stem valve. I informed that the wheels have TPMS so perhaps the replacement wasn't gonna be straightforward but when the guy removed the wheel, i was surprised to see that there isn't the tyre pressure control unit as found in the RealOEM.com website (see below for link). http://www.realoem.com/bmw/enUS/show...diagId=36_1540 The stem valve looked very similar as the one in the picture i attached. As i was in a hurry, i didn't question much but kept in mind that this was something i needed to have a look once i got back. Stem valve was replaced, resetted the notification and off i go. Question is, where's the TPMS module? Isn't it the same as in the link i shared above? Now, do i have TPMS in my front left tyre? Advices needed. |
06-09-2018, 11:46 AM | #3 | |
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I mean, if there isn't the TPMS, i shdnt be getting any notification, right? Am i missing something? |
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06-09-2018, 11:49 AM | #4 |
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The computer is not receiving a signal from the missing sensor, therefore it thinks something is wrong with the pressure in that tire.
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06-10-2018, 03:34 PM | #5 |
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Drives: 2013 535xi
Join Date: Dec 2009
Location: Nanoose Bay, BC
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Many BMWs, including my Canadian Spec F10 and E89, use the ABS sensor in order to determine if a tire has low pressure. Neither car has TPMS sensors in each wheel, and both cars will advise if a tire has low pressure, and both cars need you to reset the system when you replace tires. The system doesn't measure the pressure, but instead compares rotational speeds of each wheel. If one wheel starts rotating quicker than the others, then pressure is low and the system warns you.
Perhaps your car has this system vice TPMS. US cars, I believe, require TPMS. For other countries, this is not always the case.
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2013 535xi, Carbon Black, beige interior, M Sport package, HUD, DDC & ARS, ACS springs, Kelleners wheels
2010 Z4 35i, Crimson Red, beige interior, 6sp manual, Adapative Suspension 2000 528i, Cosmo Black, beige interior, Sport package (retired) |
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06-11-2018, 07:40 PM | #6 | ||
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Learnt something new today. |
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